Fluid-regulating device.



Patnvted July l, |902.

'Applic'atio led Jan. 21, 1901.)

J Vmlmuess FLUID- REGULATING DEVICE.

IlllL nn' maal.)

mams Pneus cov, Priore-un v lator embodying the invention.

UNITED STATES l'PATENT OFFICE.

JAMES HARTNESS, OF SPRINGFIELD, VERMONT.

FLUID-REGULATING DEVICE.

SPECIFICATION forming part of Letters Patent No. 703,410, dated July 1,1902.

l spntsonlea Jaimy, 21, 1901. scu No. 474,073. (No man.)

T0 all whom it may concern.-

` Be it'known that I, JAMES HARTNESS, of Springfield, in thecounty ofWindsor and State of Vermont, have invented certain new and usefulImprovements in- Fluid-Regulating Devices, of which the following is aspeciflcation. v

This invention hasrelation to fluid-regulating devices, and has for itsobject to provide certain improvements therein to adapt them for use inconnection with iiuid-operated mechanisms, such as turret-lathes and.

-against the piston; but it is obvious that the pressure of the springmay be augmented in other ways, as by conducting fluid under pressureagainst the outer end of the piston, as illustrated.

Referring to the drawings, Figure 1 represents a longitudinal sectionthrough a regu- Fig. 2 represents a section on the line 2 2 of Fig. 1.Fig. 3 represents an end view of the same.

The casing consists of two parts 10 and 11, having screw connection,with an exhaustchamber 12 between them. The section 10 of the casing isprovided with a plurality (six, as shown) of expanding cylinders orchambers, each reduced at one end, as at 13, and expanded at the otherend, as at 14. Leading from the two ends of each chamber are two ductsaand b, respectively, the mouths of the ducts a andb being arranged intwo concentric circles, as shownin Fig. 2. In each compartment there isplaced a'movable member or loose piston 15, against which bears acompression-spring 16 in the end 14 of the chamber. The outer ends ofthe compartments are closed by a head 17, secured in place by screws 18and by a central screw 19, which is threaded at 20. Throughstuffing-boxes 21 are passed adjustable pins 22, which limit the outwardmovement of pistons 15, there being as many pins as there are pistons.'Ihe said pins are adjusted by a nut.23, screwed adjustably upon thescrew 2O and pressing against the ends of said pins 22. In the center ofthesectionl-lOthere is a duct c, which communicates with awaste-aperture c.

d indicates the exhaust-aperture, communieating with thevexhaust-chamber 12, over which the liquid is forced, and e indicates theinlet-duct, arranged, as shown in Fig. 2, with its mouth at a littledistance from the center. of sectionA 1Q. Throughfsection 11 of thecasing and through suitable stuffing-box 24 `isa shaft 25, having,`itsaxis'concentric with the circle in whichthe -mouths of ducts a and bare arranged. O n the end of this shaft there isa cone-pulley 26, bywhich itis rotated, the headv2f7p-being formed on the inner end of saidshaft and provided with a socket to-receive a spring 28 and the stem ofthe circular v'alve'29. This valve bears against the inner end of.-section 10 of the casing, and it is provided with ctwo concentricchambers 30 3l, respectively; Said valve travels in a curved path whenthe shaft 25 rotates, its chambers beingso .arrangedthat fluid ispermitted to iiow through ducts b into the smaller ends 13 of thecylinders and at the same time to permit the liquid which is in thelarger end of-said cylinder to fiow out through the waste-pipe c' andthen to permit the liquid to flow into the larger end 14 of eachcylinder to force the piston downward or inward, with the result thatthe liquid in the smaller end of said piston is forced out through theexhaust-pipe 12 into the exhaust-chamber b.

It will be observed that when the parts are in the position shown inFig. 1, taken in connection with Fig. 2,.liquid isalways admitted to theouter chamber 31 of the valve and that when said chamber registers withany one of the ducts b liquid may flow through said duct into thesmaller end ofthe piston. The chamber 30 in said valve always registerswith the 'waste-duct c and registers successively with ducts a to permitthe waste fluid to pass out through the waste-pipe.

The valve in its revolution alternately opens IOO communication betweeneach duct ZJ and the inlet-chamber and the exhaust-chamber l2,respectively, the parts being so arranged with relation to each otherthat when the duct l) communicates with the chamber 12 the correspondingduet ct communicates with the inlet-aperture and also that when the ductZ) is permitted to communicate with the inletaperture the duct acommunicates with the waste-pipe e. Thus the valve acts very much as theordinary reciprocating valve in a pump to permit fluid to pass into thelower end. of the cylinder from an inlet and to pass out therefrom intothe exhaust pipe.

The size and stroke of the piston and the frequency of movement of thevalve control the amount of fluid which is passing through theregulator, so that I can accurately determine and regulate the flow ofthe fluid.

By employing the springs to cooperate with the incoming fluid in forcingout the fluid from the piston m13 I am enabled to augment the pressureof the fluid in the exhaust-chamber 12, as will be readily understood,this being an important feature of the invention.

Another advantage which I secure in the i employment of the spring isthat I prevent the hammering of the liquid in propelling a turret orother part of a fluid-operated lathe, so that the pressure is yieldingand continuous, as well as automatic.

It is not to be taken from this detailed description that I limit myselfto the particular details described and illustrated, as I may employ allknown mechanical equivalents therefor.

Having thus explained the natu re of the invention and described a wayof constructing and using the same, although Without attempting to setforth all of the forms in which it'may be made or all of the modes ofits use, I declare that what I claim isl. A fluid regulating ormeasuring device comprising an expanding chamber having a loose movableelement, valve mechanism exteriorto said ehamberand independent of' saidmovable element, for permitting the ingress and egress of liquid underpressure into and from the chamber, ou both sides of the movableelement, and a spring bearing against said movable element to eject theliquid under pressure.

2. A fluid regulating or measuring device comprising a chamber, a looseliquid-measuring member moved in one direction by fluid, a spring formoving said member in the other direction, and valve mechanismindependent of said member, said parts being combined whereby fluid ismeasured and discharged under a continuous yielding pressure.

3. A fluid regulating or measuring device comprising a cylinder having aloose piston, valve mechanism operable independently of said piston forconveying fluid alternately to and from said cylinder on both sides ofsaid piston, a spring bearing against said piston for ejeeting the fluidfrom said cylinder and a separate exhaust for the fluid on the springside of the cylinder.

4. A fluid regulating or measuring device comprising an expandingchamber having a movable element,valve mechanism independent of saidelement for admitting fluid alternately to the opposite sides of saidelement, mechanical means for augmenting the pressure against one sideof said element to increase the pressure of the fluid discharged fromthe other side of said element, and separate exhaust-duets for the fluidfrom the opposite sides of said element.

5. A fluid regulating or measuring device comprising a cylinder having aloose piston, valve mechanism operable independently of said piston forconveying fluid alternately to and from said cylinder on both sides ofsaid loose piston, a spring bearing against said piston for ejecting thefluid from said cylinder, and adjustable non-yielding means for checkingthe movement of said piston at any point in its travel.

6. A fluid regulating or measuring device comprising a easing having aplurality of cylinders with loose independent pistons therein, duetsleading to the opposite ends of said cylinders, a common fluid-inlet,fluid-outlets, and a single valve mechanism operable independently ofsaid pistons for supplying fluid to and exhausting it from said ducts insuccession.

7. A fluid regulating or measuring device comprising a easing having aplurality of cylinders with loose independent pistons therein duetsleading to the opposite ends of said cylinders, a common fluid-inlet,outlets, and a valve mechanism operable independently of said pistonsfor alternately supplying fluid to and exhausting it from said ducts insuccession.

8. A fluid regulating or measuring device comprising a easing having aplurality of cylinders with loose pistons therein, ducts leading to theopposite ends of said cylinders, a common fluid-outlet, a commonWaste-outlet, and a valve mechanism governing the passage of fluidthrough said outlets.

9. A fluid regulating or measuring device comprising a easing having aplurality of cylinders with loose independent pistons therein, a singlevalve operable independently of said pistons for permitting the ingressand egress of fluid to and from the cylinders on both sides of the loosepistons, pins projecting through the ends of said cylinders to limit theplay of the pistons, and an adjustable member having a threadedconnection with the easing for adjusting said pins simultaneously.

10. A fluid regulating or measuring device comprising a easing having aplurality of cylinders with loose independent pistons therein, a singleValve operable independently of said pistons for permitting the ingressand egress IOO IIO

of fluid to and from the cylinders on. both In testmonywhereof I haveaffixed my sigsides of the loose pistons, pins projecting natureinpresence of two witnesses. through the ends of said cylinders to limitthe play of the pistons, a threaded stud on JAMES HARTNESS' 5 the easingand a nut on said stud and adj ust- Witnesses:

able relatively thereto, for adjusting said pins W. LE ROY BRYANT,simultaneously. HORACE BROWN.

